Lamp.



(No Model.)

Patented Apr 17, I900. E. l]. ELDRIDGE &. K. M. SMITH.

LAMP.

(Application filed July 31, 1899.)

THE uo'nms vzrzns cc. PHm'ou Ho" WASHINGTON. 0.0.

NITED STATES PATENT OFFICE.

EDlVARD D ELDRIDGE AND KIAH M. SMITH, OF STOCKTON, CALIFORNIA.-

LAjM P.

SPECIFICATION forming part of Letters Patent No. 647,745, dated April17', 1900.

Application filed July 31,1899; Serial No. 725,576. (No model.)

To all whom it may concern:

Be it known that we,E1)wARI D. ELDRIDGE- and KIAH M. SMITH, citizens ofthe United States, residing at Stockton, in the county of San Joaquinand State of California, have in-. vented certain new and usefulImprovements in Lamps; and we do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and; use thesame, reference being had to the accompanying drawings, and to thefigures of reference marked thereon, which form a part of thisspecification.

Our invention relates to certain new and useful improvements in lamps,and more particularly to that portion devoted to the pro-1 downwardlywithout the burner, a burningtip of suitable material insertedin the topof said wick-tube, and a sleeve inserted over the top of the wicktube,and such other devices and combination of devices as will more fullyappear in the following specification and be particularly pointed out inthe claim hereunto annexed, reference being had to the accompanyingdrawings for abetter understanding hereof, in which- Figure 1 is a sideelevation of our improved burner, partly in section. Fig. 2 is asectional view of the wick-tube, wick, burningtip, sleeve, and itscontrolling mechanism detached from the remainder of the burner. Fig. 3is adetached enlarged view of the burning-tip, showing the preferredmanner of securing it in shape. Fig. 4 is a detail view of the sleeveremoved from the wick-tube and showing the perforations for theengagement of the cog or spur wheel.

Similar figures of reference indicate corresponding parts in the severalviews.

1 represents the bottom or portion of a lampburner which is inserted inthe opening of the bowl of a lamp. (Not shown.)

2 represents the perforated base mounted on the bottom 1, on which base2 the slotted cap 3 is attached in the usual way. To the base areattached the usual chimn ey-retainers 10 at suitable points on theperiphery thereof.

A wick-tube 4,0f sheet metal and the usual shape and relative size, isrigidly inserted vertically in the casing 1 2. One or more wicks 5 ofordinary construction have their ends tightly inserted in the saidwick-tube 4, occupying abou tone-half of the lower portion of the same.The free ends of said wicks 5 are adapted to communicate with the oil inthe lamp, as in ordinary cases, said wick being permanently held inposition in wick-tube 4 by threads or wires 5, inserted in lugs 6, whichare attached to the lower end of the said wick-tube 4.

A burning-tip composed of a non-combustible material 7, preferablyasbestos, held in union by a sheet-metal. band 8, surrounding the samenear the base thereof and having indentations therein which impinge uponand maintain the fibrous material more tightly in position, is removablyinserted in the top end of the wicktube 4, the lower end of said tip 7being in engagement with the top end of the permanently-secured wick 5and the upper end protruding a suitable distance above the top end ofthe wick-tube 4, suflicient to permit the same to be ignited whensaturated with kerosene.

A flame-regulating sleeve 9 of similar shape in cross-section to thewick-tube 4 loosely surrounds the top end of said wick-tube 4 and has adownwardly-extending perforated arm 11 attached to one side thereof.

A rotating shaft 12 is suitably journaled in the bottom 1 at one side ofthe wick-tube 4 and is provided with a spur or cog wheel 13, which isrigidly attached to the same at or near the center of the burner, saidwheel 13 being adapted to engage with the arm 11 by reason of theperforations therein aforesaid. The shaft 12 has a stop or lug 14rigidly at tached at asuitable point thereon for the purpose, as will beshown. A thumb-wheel15 is attached to the outer end of the shaft 12 forthe manipulation of the sleeve by means of the wheel 13 and shaft 12.

The mode of operating ourimproved lamp is as follows: The wick 5, whichmay be composed of one or more wicks, such as are in 001m the flame. Itwill also beIobserved that the the lower end thereof engages with thetop end of the wick 5. The tip 7 is constructed to that length, so thatwhile in engagement with the top of the wick 5 the top end will beslightly above the top end of the tube 4. The

sleeve 11, having been placed in position over the tube 4 and inengagement with the wheel 13, may be raised or lowered at will by theoperator by means of the wheel 15 and shaft The upward movement of thesleeve 11 12. is limited by the stop 14- engaging with the base 2 of theburner. By raising the sleeve 11 the flame is diminished, and viceversa.

When the tip 7 8 becomes crumbled or oth-' erwise impaired, it may bereplaced by another without in any way disturbing thepermanently-secured wick 5. The burner is placedon a lamp-bowl andsupplied with a chimney in the usual manner,

The advantages of our invention are that the wick 5 beingdrawn tightlyinthe tube 4no gas is generatedfrom the oil that is not consumedimmediately, and consequently there is no perceptible odor caused by theburning process of our lamp,jthat by the use of a burning-tip 7,composed of non-combustible material, such as asbestos, which wepreferably use, little or no expense isrequired for keeping the burnerin order, and that by the use ofthe sleeve 11 and tip 7 a more uniformand brilliant light is produced, the flame remain ing as regulated byreason of the density and compactness of the wick 5, thereby supplyingoil enough only for the consumption of tip 7, which is the only part ofthe burner sub ject to deterioration, may be readily removed andreplaced with a new tip withoutdisturbing any other partof the burner.

We are well aware that the combination of a wick-tube, a short tubearranged within the wick-tube, a common wick extending up into andpermanently connected by sewing to the short tube, and a filling ofasbestos'in the short tube above the common wick is old, as shown in thepatent of one Larchar, No. 39,153, of July 7, 1863. We are also awarethat it is old, as shown in the patent-to Burk lin, No. 602,391, ofApril 12, 1898, to surround the contiguous end portions of a common wickand a non-combustible tip with a me 'tallic band, whichfpermanentlyconnects the same together; We therefore make no claim to theconstructions mentioned; but

lVhat we claim, and desire to secure by Let tersPatent, isi In a lamp,the combination of a burner having a wick tube, a' wick occupying andper= manentlysecured in the lower portion of the wicktube, theburner-tip comprising a body.

of non-combustible material and a metallic bandsurrounding the-body; thesaid tip be= ingarranged in the upper portion of the tube so that itslower end contacts with'theupper end of the wick and being removable asa whole from the tube, independent of the wick, and a sleeve looselysurrounding and adj ustable on the wick-tube, snbstantiallyas speci-'fied.

In testimony whereof we afiix our signatures'in presence of twowitnesses.

' EDWARD D. ELDRIDGE.

KIAH M. SMITH. Witnesses: M. HAYNE,

JOSHUA B. WEBSTER.

